COUNTRY KITCHEN   
Great title considering the theme: kitchen creations containing codes of U.N. members!
People in trees, perhaps   NIECES
Bolt down   SECURE [not to eat the theme entries]
Do one’s part   ACT
Take-out order?   DELE
Labor day output?   BABY [note lower case D]
Pin in the back   TEN [in bowling, the ten pin is in the back row]
Oct. 24, every year   UNDAY [theme clue that just happens to be today]
Clever duos:
Plane starter?  AERO
Plane starter   PILOT
Hip location?   INSPOT [question mark kind of gave it away --- wasn’t needed]
Hip   COOL 
Tangy confection   PEPPERMINTCANDY [Given its location in the grid and the other theme entries, I’d go with “After dinner offering†or “Long clue follow-up.â€]
Never heard 
RIGMAROLE, only rigamarole 

CKONE [new to me, and what makes cologne unisex?  Does it smell good to both sexes where “feminine†cologne smells good only to men --- or is it only to women?]
RATING: 
Three grins = Excellent: Loved it; Two grins = Good: Enjoyed it; One grin = Satisfactory: A bit bland for my taste; One teardrop = Unsatisfying: No fun